âº to âpay âmoney in âorder to set someone âfree: Her âfather ransomed her for a million âdollars. (Definition of ransom from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press).ansom verb [T]. âº to âfree someone who has been taken away by âpaying âmoney: The âexecutive was ransomed for a million âdollars. (Definition of ransom from the Cambridge Academic Content Dictionary Â© Cambridge University Press).
Convergent boundaries are plate boundaries formed when two tectonic plates crush together. The denser of the two plates goes under the other! For example, if two oceanic plates (which are tectonic plates found in the ocean) collide, the denser of the two plates goes under the other and forms an oceanic trench. If an oceanic plate and a continental plate collide (a continental plate is a tectonic plate that holds land/continents), the oceanic plate will go under the continental plate and goes into the mantle. If two continental plates collide, the crust thickens and is forced to create landforms such as mountains.
Thus at divergent boundaries, oceanic crust, made of basalt, is created. When two plates come together, it is known as a convergent boundary. The impact of the two colliding plates buckles the edge of one or both plates up into a rugged mountain range, and sometimes bends the other down into a deep seafloor trench. A chain of volcanoes often forms parallel to the boundary, to the mountain range, and to the trench.